Hysteresis motor is particularly useful for high-quality record players and tape-recorders because___________?
Correct answer: D. it develops hysteresis torque which is extremely steady both in amplitude and phase
- A. it revolves synchronously
- B. it is not subject to any magnetic or mechanical vibrations
- C. it can be easily manufactured in extremely small sizes of up to 1 W output
- D. it develops hysteresis torque which is extremely steady both in amplitude and phase
Explanation
A hysteresis motor produces a nearly constant hysteresis torque, steady in both magnitude and phase, while running synchronously. This smooth operation makes it suitable for record players and tape recorders.
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